Intake Camshaft Position Timing Over Advance Bank 2
Table of contents
P0021 MERCURY Possible Causes
- Camshaft timing incorrectly set
- Continuous oil flow to the Variable Camshaft Timing (VCT) piston chamber
- Erratic camshaft position due to low oil pressure
- Oil flow restriction in the oil passages or the VCT valve body
- Faulty Variable Camshaft Timing
- Variable Camshaft Timing harness is open or shorted
- Variable Camshaft Timing circuit poor electrical connection
- Damaged camshaft position (CMP) sensor
- Open or short in the CMP sensor circuits
- Radio frequency interference (RFI) interference
How do I fix code P0021 MERCURY?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P0021 MERCURY code
The cost of diagnosing the P0021 MERCURY code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of power
- Engine rough idle
P0021 MERCURY Description
The Powertrain Control Module (PCM) monitors the Variable Camshaft Timing (VCT) position for an over-advanced camshaft timing. The Diagnostic Trouble Code (DTC) will set when the camshaft timing exceeds a maximum calibrated value or remains in an over advance condition- Camshaft timing over advanced.